2010
#157,234
National surname rank
Recorded bearers 103
First available Census row
Per 100,000 0.03
Very Rare Last name
Trebour
A surname of French origin meaning one who cultivates or works the ground.
According to the 2020 US Census Bureau surname tables, roughly 116 Americans carry the last name Trebour. That puts it at #155,270 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,954,779 residents).
This page is the full Name Census profile for the Trebour surname. You will find the Census Bureau frequency data, a multi-census history view, an ancestry and ethnicity breakdown based on self-reported demographics, the name's meaning and origin where available, and answers to the most common questions people ask about this surname.
Bearers in the US
116
1 in 2,954,779
Census rank
#155,270
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
101
very rare in the US
Popularity narrative
The Census Bureau recorded 101 bearers of the surname Trebour in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 155270th position in the national surname ranking.
Among Census respondents with the surname Trebour, the largest self-reported group is White at 92.1%. The next largest groups are Hispanic (7.9%).
Origin
Meaning and origin of Trebour
The surname TREBOUR has its origins in the French language and can be traced back to the Middle Ages. It is believed to have originated from the Old French word "trebor," which meant "one who lives near a watchtower or fortified dwelling." This suggests that the name's earliest bearers may have lived in or near such structures, possibly serving as guards or sentries.
The earliest recorded instances of the name TREBOUR can be found in medieval records and documents from the region of Normandy in northern France. One notable mention appears in the Livre des Bourgeois de Rouen, a register of citizens from the city of Rouen, dating back to the 13th century. Here, a certain Jean TREBOUR is listed as a merchant and landowner.
In the 14th century, a variant spelling of the name, "TREBORT," surfaces in the Cartulaire de l'Abbaye de Fécamp, a collection of charters and records from the Abbey of Fécamp in Normandy. This document references a Pierre TREBORT, who was a tenant farmer on the abbey's lands.
As the name spread across France and into neighboring regions, variations in spelling emerged, such as TREBOURE and TREBOURG. In the 16th century, a notable figure bearing the name was Jacques TREBOURE (1520-1589), a French philosopher and scholar who authored several works on ethics and morality.
Another historical figure of note was Étienne TREBOURG (1572-1645), a French architect who played a significant role in the construction of several churches and cathedrals in Paris and the surrounding areas during the reign of King Louis XIII.
In the 18th century, a prominent member of the TREBOUR family was Marie-Anne TREBOUR (1702-1768), a French noblewoman and philanthropist known for her charitable works and support of various cultural institutions in Paris.
As the name spread beyond France, it found its way into other European countries, including Belgium and Switzerland. One notable bearer was Jean-Baptiste TREBOUR (1810-1879), a Swiss watchmaker and inventor who developed several innovations in the field of horology.
Throughout its history, the surname TREBOUR has been associated with various occupations, from merchants and landowners to scholars, architects, and craftsmen, reflecting the diverse backgrounds of those who have carried this name over the centuries.
Demographics
Ancestry and ethnicity for Trebour
Among Census respondents with the surname Trebour, the largest self-reported group is White at 92.1%. The next largest groups are Hispanic (7.9%).
The bar chart below shows how Trebour bearers described their own race and ethnicity on the 2020 Census form. The Census Bureau groups responses into six broad categories: White, Black or African American, Hispanic or Latino, Asian and Pacific Islander, American Indian and Alaska Native, and Two or More Races. When a category has too few respondents for a given surname, the Bureau suppresses the figure to protect individual privacy, which is why some names show fewer than six slices.
Percentages are shown for every Census year so the breakdown stays comparable over time. When the source file also includes raw headcounts, Name Census shows those alongside the percentages in the legend.
Keep in mind that these are self-reported numbers. A person's surname does not determine their race or ethnicity, and the distribution you see here reflects the specific population who happened to carry the Trebour surname at the time of the 2020 Census, not any inherent property of the name itself.
- White92.1% · 93
- Hispanic or Latino7.9% · 8
Timeline
Historical Census data for Trebour
Trebour appears in 2 published Census surname files: 2010, 2020. The cards below show how the name's rank and bearer count changed across each release.
2020
#155,270
National surname rank
Recorded bearers 101
-2 bearers (-1.9%)
Per 100,000 0.03
Rank movement Up 1,964 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #157,234 | 103 | 0.03 | First available Census row | First available Census row |
| 2020 | #155,270 | 101 | 0.03 | -2 bearers (-1.9%) | Up 1,964 places |
For 2020, the Census Bureau published race and Hispanic-origin columns as counts rather than percentages. Name Census converts those counts back into shares so the ancestry section stays comparable with the older surname files.
Year on year
2010 vs 2020 Census
How has the Trebour surname changed between Census years? The chart shows bearer count side by side, and the table compares rank, count, and frequency.
Census year comparison
20102020
| Metric | 2010 | 2020 | Change |
|---|---|---|---|
| Rank | #157,234 | #155,270 | 1.2% |
| Count | 103 | 101 | -1.9% |
| Per 100K | 0.03 | 0.03 | 12.6% |
Between the 2010 and 2020 Census, the number of Trebour bearers went from 103 to 101 (-1.9% change). The surname moved up 1,964 positions in the national ranking, going from #157,234 to #155,270.
FAQ
Trebour surname: questions and answers
How many people in the U.S. have the surname Trebour?
Name Census estimates that about 116 living Americans carry the surname Trebour. Using the current population baseline, that works out to roughly 1 in 2,954,779 residents.
How common is Trebour?
Trebour ranks #155,270 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.03 per 100,000 residents, which is about 0 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 101 people with the surname Trebour. That is different from the site's living-bearer estimate (116), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.03 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.03 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 0 of them to have the surname Trebour.
Has Trebour become more or less common over time?
Between 2010 and 2020, the surname Trebour went from 103 recorded bearers to 101. That is a decrease of 2 (-1.9%). In the national ranking it rose from #157,234 to #155,270.
What does the Census say about the background of Trebour?
Among Census respondents with the surname Trebour, the largest self-reported group is White at 92.1%. The next largest groups are Hispanic (7.9%). These figures come from the 2020 Census Bureau surname tables, based on how respondents described their own race and ethnicity.
Which group reports this surname most often?
White is the largest self-reported group for the surname Trebour in the 2020 Census, accounting for 92.1% (93 people in the source table).
What is the full ancestry breakdown?
Trebour appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (92.1%), Hispanic (7.9%). For 2020, the source file also published raw headcounts for each group, which is why this page can show both percentages and counts in the ancestry section.
Is this page using the latest Census data?
Yes. This page is using the latest surname file currently loaded on Name Census, which is 2020. The historical section above also keeps any older Census surname entries we have for Trebour (2010, 2020).
Does the Census include every surname?
No. The Census Bureau only publishes surnames that appeared at least 100 times in a given decennial Census. That means very rare surnames are excluded entirely, and a surname can appear in one Census release but disappear from a later one if it falls below the reporting threshold.
Why don't the ancestry percentages always add up to exactly 100%?
There are two main reasons: rounding and suppression. The Census Bureau rounds published values, and it may suppress very small cells to protect privacy. For 2020, the Bureau also published raw group counts rather than direct percentages, so Name Census converts those counts back into shares for comparability across census years.
What does Trebour mean?
A surname of French origin meaning one who cultivates or works the ground. The fuller origin note on this page goes into more detail.
Where does the surname data come from?
All surname statistics on Name Census are drawn from the US Census Bureau's decennial surname frequency tables. These files list every surname that appeared 100 or more times in the 2020 Census, along with a count, a per-100,000 rate, and a self-reported demographic breakdown. You can read the full explanation on our methodology page.
How does Name Census estimate living bearers?
For surnames, Name Census does not age cohorts the way it does for first names. Instead, it takes the Census Bureau's published frequency for Trebour (0.03 per 100,000) and applies that rate to the current U.S. resident population to estimate how many living Americans have the surname today.
How many people are called Trebour?
Find out how many Americans have the surname Trebour on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.